An Arduino-powered smart clothesline retracts when it rains (YL-83 sensor) or humidity is high (DHT11 sensor), using a 28BYJ-48 stepper motor and ULN2003 driver.

This library calculates the slopes of a wide variety of gas sensors, popular models such as [MQ-2, MQ-3, MQ-4, MQ-5, MQ-6, MQ-7, MQ-8, MQ-9, MQ131, MQ-135, MQ-136, MQ-137, MQ303A, MQ307A, MQ309A]. It ...